|Book VI Proposition 20|
the sides about the equal angles EBC, LGH are proportional;
the triangle EBC is equiangular with the triangle LGH, [V1.6]
the triangle EBC is similar to the triangle LGH. [V1.4 and VI.Def.1]
For the same reason
the triangle ECD is also similar to the triangle LHK.
the similar polygons ABCDE, FGHKL have been divided into similar triangles, and into triangles equal in multitued.
|Previous Page Return to Propositions Next Page|